252 XYRIDACEAE 
Sterile filaments bearded: leaf-blades f fi: 
a sabe sepals included, i.e., B by the bracts. 
sepals partially exserted. 
Sterile pipa e glabrous: leaves terete, filiform. 
EVIFOLIAE 
Keel of the lateral sepals smooth or erui im 
Keel of the lateral sepals ciliate-fringed. 
II. COMMUNES 
Keel or wing of the lateral sepals ciliate. 
Lateral sepals winged, the wing partially ciliate, not 
bearded. 
ioe l-w bs ms arrow, narrower than the sepal-body. 
g broad, broader than the sepal-body 
Lateral mer keeled, aes c mainly ciliolate its entire 
length, bearded at the 
eel or wing of the cra. ails incised, erose-toothed or 
e. 
Keel or wing cross-toothed or incised. 
Lateral sepals Spats d from below the middle or from 
e base to the a 
Lateral oe SCALE. from above the middle to the 
Be. and leaves not scabro-puberulent. 
Spike ovoid, oval or globular, 5- 15 mm. long at 
mon loosely imbricate in few series, de- 
Bracts. pum imbricate in several series, 
Spike oblong to conic-oblong, 16-23 mm. long at 
Es urity ; bracts numerous and in oed series. 
e T leaves scabro-puberulent all ov 
Keel or Inc lacerate 
Lateral a creste d from about the A a below 
it, to the apex, the crest erect o 
Spike mot 11- 15 mm. long; Draco ounded. at the 
ex. 
Spike acute: Bedae sepals with the wing nar- 
ow or o ete near the base: leaves and 
AA smoo oth. 
Spike obtuse: lateral sepals with the wing 
broad to the base: leaves. and scape rough- 
margined. 
Spike oblong or cylindric, 15-30 mm. long; bracts 
and broadly rounded or nearly trun- 
cate at the apex. 
Lateral sepals crested from the base to the apex, the 
crest spreading or partially recurved. 
II. FIMBRIATAE 
Plant not bulbous at the base, the leaf-bases not greatly dilated. 
numerous ; e mostly s mm. wide at maturity. 
. H y. 
ostly 5-10 mm. wid 
Crest of the ict Beanie of Ves ehori erect segments : 
upper part of the scape smooth 
e of the. lateral sepals of very long spreading seg- 
upper part of the scape rough. 
Plant markedly “bulbous at the base, the oasis greatly di- 
and persistent. 
Corolla yellow: upper part of the scape, and the spike, 
Corolla white e: upper part of the scape, and the spike, 
glaucous or glaucescent. 
IV. BALDWINIANAE 
Plants clustered: leaves very slender. 
II. COMMUNES. 
III. FIMBRIATAE. 
. BALDWINIANAE. 
, X. brevi 
2, X. PAAA 
3. X. ambigua. 
4, X. stricta 
5. X. torta. 
6. X. neglecta. 
7. X. caroliniana. 
8. X. communis. 
. X. elata. 
10. X. scabrifolia. 
m 
1. X. difformis. 
12. X. serotina. 
13. X. platylepis.. 
14. X. iridifolia. 
15. X. Elliott. 
16. X. Smalliana. 
17. X. fimbriata. 
18. X. flexuosa. 
19. X. pallescens. 
20. X. Baldwiniana. 
